Hot spot monitoring in infrared camera videos

Hello!

I'm just tryng to find and monitor during a test the hotspot point or points from a video taken with infrared camera.

I'm imagining to:

• track a certain area during the video,
• extract each few seconds the rgb colors,
• find the hotspot as the point or group of points with the highest temperature

@Image Analyst could you help me?

[Welder_processing]

@Rik

Answer 1

[Image Analyst]

Well, I'm not Rik, but hopefully this will help. I'm sure you'll be able to adapt this attached demo to your image. If you really can't figure it out, attach your original image with embedded colorbar, like the one in the upper left of my demo below.

[Rik]

Comment posted as answer by @Welder_processing:

Thank you. I think that I’ve seen this demo file in another post. But it’s the starting point. What lines should I add if a processing of 100 images is needed? The challenge is to detect temperatures change in 0,1 degrees each time that varies from an image to another. I have to compare each of them in a specific area and intercept variations.

[Rik]

If you need to process multiple images you can use this code on those various images.

If you need to detect temperature change, you will have to measure the temperature for a specific area (or pixel) for each image, which means you have a vector for each area. Then it is a simple as using diff(x)>=0.1;.

[Image Analyst]

To process a bunch of images, see code in the FAQ and adapt as needed:

https://matlab.fandom.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

[Welder_processing]

Thank you great!

Just another thing: processing the images I've find out that some pixels are white = at max temperature. They seem to be outliers from the image. On the IR software they are not present. Do you know why?

The temperature identification is quite well but wih this problem, the analisys becames very noisy.

[Image Analyst]

I don't know why the image exported with salt and pepper noise to it. You can apply my salt and pepper noise elimination routine, attached.